Method of making variegated glass



@bbovmuf March 17. 1925. y I. H. FREESE METHOD OF MAKING VARIEGATED GLASS Filed April 15, 1922 W W m 1 a m 8 NZ .%0 w 0 1 m J w I 7 H w 9 a B J & w .1 a 6 g m J fl 2 7 J .r L; MW 9m 6 A W) w w 6 w a March 17. 1 925. 1,529,947

I. H. FREESE METHOD OF MAKING VARIEGATED GLASS,

Filed April 15, 1922 3 Sheets-Shget 2 awue/nboz ji'a H Freese awe MW March I 7. 1925.

1,529,947 I. H. FREESE METHOD OF MAKING VARIEGATED GLASS Filed April 15, 192? 3 Sheets-Sheet 5 (-14 wen-1 to; I

11m H. Fz ese i GUM/v m in without departin Patented Mar. 17, 1925. I

" UNITED STATE me. n. FBEESE, or CLARKSBUBG, wns'r METHOD OF MAKING Application filed April 15,

To all whom it may concern:

Be it known that I, IRA. H. Fnnnsn, a citizen of the United States, residing at Glarksburg, in the county of Harrison and State of Test-Virginia, have invented a new and useful Method of Making Variegated Glass, of which the following is a full, clear, and exact description.

My invention relates to what is believedto be an entirely new method for making variegated glass, and one of the advantages of my invention is that such glass may be produced while it is flowing in a stream from the furnace or flow spout. The apparatus disclosed herein forms the subjectmatterrof a divisional application #622,864,

filed March 5, 1923. I

The invention relates more particularly to the manufacture of variegated glass marbles, though, of course, it is not limited thereto; and by the method to be described herein glass or other coloring substance of any desired color may be injected into the center of the flowing glass stream, thereby greatly reducing the cost of manufacture of marbles or similar-articles, and producing many other advantageous results, which need not be mentioned herein, asthey will be obvious to those skilled in the art.

I will now describe the method and two particular forms of apparatus by which the method may be carried out, it being understood that those skilled in theart may make many changes and modifications therefrom the spirit of my invention as defined 1n the appended claims; and the drawings forming part of this specification are, therefore, to be considered merely as illustrative and not in any limiting sense.

In the drawings:

Figure 1 is a vertical sectional view through the flow spout taken on line 1-1- of Figure 2; parts being broken away to. more clearly show the construction.

Figure 2 is a plan view of the flow spout, containers, and operating mechanism; parts being in section. 7

Fi re 5 is a longitudinal vertical sec tiona view through the furnace and flow spout; the containers being shown in elevation.

Figure 4 is a fragmentary perspective view of one of the containers and the 'operating mechanism, and

Figure 5 is a vertical longitudinal sec-.

posed projections VIRGINIA.

VARIEGAT ED GLASS.

1922. Serial No. 553,145.

tional view of a modified form of the apparatus.

Referring to the drawin s more in detail, numeral 1 indicates generzfily a conventional glass melting tank, having Y spout 2, which is provided with one-or more flow holes 3, in which are arranged removable bushings 4 of refractory material. Molten glass flows through the throat 5'i nto the flow spout 2, maintaining a certain level therein, and flowing out through the flow holes to molds or other forming devices. Conventional shears t are positioned below the flow holes, and are adapted to be operated at predetermined intervals to sever the glass stream in the well known manner. The structure thusfar describedis old and well known in the art, and further description thereof is believed to be unnecessary.

, In the drawings-I have shown the flow spout as provided with four flow holes, and appropriate mechanism associated with each of the flow holes; but,'of course, it is not my intention to be limited to any particular number of flow holes, and I may use either a greater or lesser number than the number shown; and, as the mechanism associatedwith the four flow'holes is identical, a description of one will be suflicient.

I will first describe the means which I have provided for controlling the flow of molten glass from the flow spout, through the flow holes, to the molds or other form-, ing.devices. I

A container valve, indicated generally. by numeral 6, is mounted in the flow spout in alignment with the flow hole, and has a valve stem 7 projecting downwardly from the lower portion thereof, the lower end ofv the stem being rounded or otherwise the bushing 4 and formed to seat against close the flow hole or orifice 3 when the container valve is lowered.

The container valve extendsthrough a suitable opening the flow spout and is flanged adjacent its upper end, as indicated by numeral 9. he container valve is carried by a ring 10 adapted to abut against the flange 9; the ring being provided with diametrlcall v0pends of the links 12 are attached.

A lever 13 is fulcrumed on a shaft 14, the shaft being supported in any desired manner, in the present instance it being shown the usual flow 8'provided in the top of 11 to which the ower "v er 13, and extends connecting links as mounted in thestays 15. The-lever 13 .is forked adjacent the container, and the projections tines 16, 16 are provided with 17 adapted to receive'the upper ends of A rod 18 is 'lever 13 is preferably provided with a I rotating the counterbalance weight 21.

The means for operating the container valve will be clearly understood from-the,

I I hand wheel 20 rection to lift-the container'valve,

to flow through the flow holes or other forming devices. By

hand wheel in the opposite dicontainer valve is lowered and seated, thereby shutting off the glass molten glass to the molds rection the the valve is flow of molten While I have described a specific means for operating the container valve, it is to be clearly understood that the invention is in no way limited to such means, and I may substitute such other operating means that I may in the future prefer.

Thus far I have described only the apparatus for controlling the flow of molten glass from the flow spoutto the molds. will now describe the means by which cast integral with I I I I pivotally attached to the lever -26 and ex- 1 direction, the plug through the vertically a ustable valve plu This valve plug is f pivotally attache to a lever 26 by any desired means, 'suchas by links 27 and plus 28.

The lever 26 is shownas fulcrumed between projections 29,

lever 13. .A rod 30 is tends downwardly through a I lever 13 the lower portion of fthe rod being screw threaded and having a hand wheel 31,

31 to th Inent between the collar and counterbalance weight 33. v e The m'eansfor operating'the valve plug 25 will 'be'clearly going description. I

wheel 31, or other operating means, in one will be lifted, thereby unseating the valve: and 1 permitting the molten glass or other substance of a difthe flowing stream.

valve, for the reason that it has the dual function of being a'container or-receptacle for the molten glass of difi'erent color, and a being a valve to control the flow of glass through the flow hole. The container valve is preferably made of some refractory material, and as shown in the-drawings it iscircul'ar cross-sec? tion, though obviously it may have any esired cross-sectional shape. The lower portionof the container valve, constituting the valve stem, has a passage 22 extending therethrough, the passage communicating with the interior of the enlarged portion of the container valve, which is the container proper, and is indicated by the numeral 23. ,The container is open at the top to per ,mit charges to be supplied thereto as reof the mo ferent color or composition. is injected into a cover may be'ein- ;rection the plug Vmolten glass in the container to flow therefrom through the passage 22. While by ro ating the hand wheel in the opposite divalve, and shutting off the flow of glass from the container. Of course, I Inaysubpassage in thewill be lowered, seating the e 22, I have provided a I which are preferably e lever 13, the upper end of the. .collar being beveled toperniitrelative move- ;the'lever' 13. y The lever 26 is preferably provided with a unseating the valve? and permitting the understood from the fore- By rotating the'han'd' st1tute any other desirable means, for con- I a certain distance, then the. lever 26 and'the f valve plug .carried thereby will be raised or lowered are in the position as shown in the right a like distance. 'So that if the parts hand container valve of Figure l, and the hand wheel 20 is rotated to lift valve, then the glass in the flow spout will be free to flow out through but the valve plug 25 will remain seated talner being injected into the center of the Y flowing from the flow column of glass spout. It is thus obvious that by this simple mechanism I am not only able to inject at And, of course, by unseating both valves, the glass from the, ass from the con the container 7 the flow hole;

' 34, whereby heat is supplied from the furnumeral 1 indicates the nace to the flow spout and containers to maintain the glass in a molten condition, and ordinarily the radiant heat surrounding the containers will be suflicient for that purpose, but in case additional heat. should be required for the containers, it may be supplied from external sources, such as by employ oneconburners 35.

In actual practice I may tainer or a plurality thereof; and it will be understood that when more, than one container is used, each of them may have a charge of glass of different color, so that the method and apparatus are capable of producing a plurality of variegated glass streams, and each stream differing in color formation. V

It is not deemed necessary, or desirable, to illustrate specifically forming devices for marbles or other similar articles, and I have, therefore, merel. illustrated in a general way molds 36. bviously, the invention relates to themethod and means for producing the variegated glass streams, and does not relate to any particular mechanism for forming the articles after the glass is produced; and I am free to use in connection with 111 method andapparatus any desired type 0 forming device.

From the foregoing, description it is believed that my method be clearly understood. Molten glass flows from the How spout in the well known 'manner, and I inject into this stream, preferably into the center thereof, another stream of molten glass differing from the first mentioned stream in color or. composition. As the variegated glass flows from the spout it is formed into marbles, or other articles, by any desired forming devices. The method may undoubtedly be carried out by other apparatus, and, of course, it is not my intention to be-li nited to the particular apparatus described herein.

I will now describe a modified form of apparatus which is particularly adapted to combine a plurality of colored glass streams with the stream flowing from the melting tank; reference being had to Figure 5.

As in the meral 2, the flow spout; numeral 3, the flow hole; numeral 4, the bushing, numeral 4, the shears for severing the glass stream; numeral 36, the mold; and numeral 35, the burners.

A vertically adjustable gate 37, of refracsage 39 of each and apparatus will I previously described figures, melting tank; nu-

without departin material, is arranged between the melttank and the flow spout; the function of tory ing thereof being to regulate the quantity glass supplied to the flow-spout.

Color pots 38, 38, of refractory material, are located above the flow spout, and each pot is provided with an outlet passage 39, permitting the colored glass to flow from the pots and unite with the stream of glass from the melting tank..

A vertically adjustable valve plug 40 is arranged in alignment with the outlet paspot, whereby the flow of the colored glass from the pots is controlled. A similar valveplug ll is arranged in alignment with the flow hole 3 of the flow spout 2. It is not deemed necessary to illustrate means for operating as any desirable means may be employed.

It is-believed that the operation of the apparatus will be obvious from an inspection of the drawings. The molten glass flows in astream from the melting tank, to the flow spout; the quantity thereof being this stream flows the first glass pot, and as these two streams ferently colored glass. The variegated glass stream thus produced flows through the flow hole and is sheared at predetermined intervals in the usual manner. The sheared portions are then pressed or otherwise formed into the desired patterns. The valve plug 41 controls the How of molten glass in a manner well known in theart.

It will be apparent that I may employ any desired number of glass pots, each pot containing glass of a different color; that by the adjustment of the valve plugs I may control the quantity of each color supplied to the stream; andby entirely tain of the valves the combination of colors may be uickly changed. It is thus clear that by t e use of the method and apparatus described herein I am able to produce variegated glass articles at a low. cost, and of almost an infinite variety. I The streams of flowing glass are onal in cross-section, and y that term I intend to include streams that may be circular, oval, square or section, or which have the shapes of any of the known flow orifices.

In accordance with the Patent Statutes, I have described what I now believe to be the best embodiments of my invention, but I do not'wish to be understood thereby as limiting myself or the scope of my inven-' tion, as many modifications may. be made from the spirit of the invention; and a such I aim to include in the scope of the appended claims.

closing certriangular in crossthe valve plugs,

combined continue along they receive from the second glass pot another stream of difistrean'i to a stream of flowing What I claim as new and desire to seem as Letters Patent is: 1. The method of producing variegated glass which includes combining molten glass of different colors in a flowing stream, said stream being polygonal in cross-section. y

2. The method of producing variegated -glass which consists in combining molten glass of different composition in a flowing stream, one of said glass compositions being substantially" enveloped by the other.

The method of producing colored glass which comprises adding a coloring substance glass,'and severing said stream into charges for molding.

4. The method of producing colored glass which consists of injecting a coloring substance into substantially the center of a flowing'strcam of glass 5; The method ofproducing variegated glass which includes injecting a stream of molten glass into the interior of another of molten glass'of diflerentico'lor.

6. The method of producing variegated glass which comprises injecting a stream of molten glass into substantially the center of another stream of molten glass of different color.

7. The method of glass articles which two' streams of molten glass producing variegated consists in providing of different composition, combining the two streams, and

supplying the glass thus combined to the forming devices, onal in cross-section.

j 8-. The method of producing variegated glass articles which consists in providing glass which includes said streams .being .polygtwoJstreams of molten glass of different hue, combining the two streams, the glassthu's combined to forming devices, said streams being polygonal in cross-section.

9. The method of glass which comprises providing two streams of molten glass of different hue, and injecting one of said streams into the interior of the other stream.

10. The method of of glass of different of said streams into of the other of said streams.

11. The method of producing variegated glass which consists in "providing, two streams of glass of different hue, and en veloping one of said streams Within the other of said streams. c

12. The method of producing glass which includes providing a plurality of streams of molten glass, and enveloping one of said streams within another of said streams." I

13. The method of producing variegated glass articles which includes.

substantially the center providing two streams of glass of different color, said streams being and supplyingproducing variegated providing two streams hue, and injecting one producing variegated I olygonal in cross-section, and

feeding said streams of different color to forming devices. a.

14. The method of producing variegated glass-articles which includes providing two streams of glass of different hue, said streams being columnar in shape, severing said streams into charges, and feeding said charges to formingdevices.

A ,IRA H. FREEISE. 

